As I drive my gauge will drop to zero then bounce back up to the proper levels. There is
no change in drive performance. Is this just a faulty sensor or switch and is fairly easy o
get to and change...

I have a 2008 GMC YUkon that has been making banging noises from the front left of the
car when driving. When I press on the break my oil pressure goes down to 0 but when I
apply gas it goes back up...

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